When did u feel betrayed?

"BETRAYAL" if this word rings bell in ur mind then yeah this qts. is for you!!!!
List down one incident were you have felt badly betrayed and specify what did u learn from tht incident!!! This...

Do you keep pillow beneath ur head while sleeping!!!!!!!!!!!!!!

now ths may sound rubbish but it is scientifically proved tht u are better of sleeping without a pillow bcoz u may save 20% of ur chances of getting back problems!!!!!!!!!! i sleep without a pillow...